My wife is 9 years younger than me. We are very happy and have been since day one. I,too thought that my age at the time, 33, would be a problem. Not so it tunrs out. My first was older by 4 years. Not that wasn't our problem, though.
What I considered before asking Amanda to marry me was "Do you see the two of you sitting together on the porch in a chair still holding hands when you're both old and gray?"
Yep. Heck, she even said she would change my diapers when the time comes. That is real love, gentlemen.
Bottom line is if you are both happy who cares what others think?
BTW-I'm 42 and probably wouldn't consider a 24 year old for a realtionship if I were single again. Most females that I know of that age are not into the kinds of recreation that I am. Meaning cars and car events, car shows, Pelican surfing, and NOT going out to clubs and what not.